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new hrv install question

We just installed a carrier hrvcclha150 unit with the standard wall controll in our airtight 1200 sq. ft ranch style house which carries 55% first floor and 65% basement humidity. They interlocked the hrv with out heat pump also. I set the standard controll on intermittent and the 40% setting. Our hrv has been running non stop since being installed 24 hours ago. Is this normal when they are first installed since I set the standard controll on intermittent